It is possible ignore or black error messages in IBridgePy but it is NOT recommended to do so because you may miss some of the most important information from IB. Also, you may need to see the error messages to debug your codes.
Anyway, if you really really want to do so, you can do that in IBridgePy. Go to the folder where you save IBridgePy and get into the folder of IBridgePy. Open IBAccountManager.py and look for def error(self, errorId, errorCode, errorString). Replace the whole function content by “pass”, which means that do nothing in this function. Then, you won’t see any error messages any more.